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                            <div style="color:gray; word-break: break-all; font-size:12px;">原英文版地址: <a href="https://www.elastic.co/guide/en/elasticsearch/reference/7.7/breaking-changes-7.5.html" rel="nofollow" target="_blank">https://www.elastic.co/guide/en/elasticsearch/reference/7.7/breaking-changes-7.5.html</a>, 原文档版权归 www.elastic.co 所有<br/>本地英文版地址: <a href="../en/breaking-changes-7.5.html" rel="nofollow" target="_blank">../en/breaking-changes-7.5.html</a></div>
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<strong>重要</strong>: 此版本不会发布额外的bug修复或文档更新。最新信息请参考 <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html" rel="nofollow">当前版本文档</a>。
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<h2 class="title">
<a id="breaking-changes-7.5"></a>Breaking changes in 7.5<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/migration/migrate_7_5.asciidoc">edit</a>
</h2>
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<p>This section discusses the changes that you need to be aware of when migrating
your application to Elasticsearch 7.5.</p>
<p>See also <a class="xref" href="release-highlights.html" title="7.7版本的新特性"><em>7.7版本的新特性</em></a> and <a class="xref" href="es-release-notes.html" title="Release notes">Release notes</a>.</p>
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<ul class="itemizedlist">
<li class="listitem">
<a class="xref" href="breaking-changes-7.5.html#breaking_75_allocation_deprecations" title="Allocation deprecations">Allocation deprecations</a>
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<li class="listitem">
<a class="xref" href="breaking-changes-7.5.html#breaking_75_search_changes" title="Search Changes">Search Changes</a>
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<h3>
<a id="breaking_75_allocation_deprecations"></a>Allocation deprecations<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/migration/migrate_7_5.asciidoc">edit</a>
</h3>
<h4>
<a id="deprecate-cluster-routing-allocation-disk-include-relocations-setting"></a>The <code class="literal">cluster.routing.allocation.disk.include_relocations</code> setting is deprecated.<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/migration/migrate_7_5.asciidoc">edit</a>
</h4>
<p>The <code class="literal">cluster.routing.allocation.disk.include_relocations</code> cluster setting is now
deprecated. In future versions, Elasticsearch will account for the sizes of relocating
shards when making allocation decisions based on the disk usage of nodes in the
cluster.</p>
<p>Currently, you can set <code class="literal">cluster.routing.allocation.disk.include_relocations</code> to
<code class="literal">false</code> to disable this accounting. This can result in poor allocation decisions
that might overshoot watermarks and require significant work to correct.</p>
<p>To avoid deprecation warnings, discontinue use of the setting.</p>
<h3>
<a id="breaking_75_search_changes"></a>Search Changes<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/migration/migrate_7_5.asciidoc">edit</a>
</h3>
<h4>
<a id="_stricter_checking_for_wildcard_queries_on_index"></a>Stricter checking for wildcard queries on _index<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/docs/reference/migration/migrate_7_5.asciidoc">edit</a>
</h4>
<p>Previously, a wildcard query on the <code class="literal">_index</code> field matched directly against the
fully-qualified index name. Now, in order to match against remote indices like
<code class="literal">cluster:index</code>, the query must contain a colon, as in <code class="literal">cl*ster:inde*</code>. This
behavior aligns with the way indices are matched in the search endpoint.</p>
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